Hybrid Racing Formula Exhaust System for 17-21 Civic Type R

  • Full 304 Stainless Steel

  • Includes controllable electronic valve

  • Dry carbon fiber rear valence panel

  • Bespoke mufflers and custom flanges

$1,999.99

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Tip Design: Blown

Part # HYB-CES-01-05

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Description

Hybrid Racing Formula Cat-Back Exhaust System - 2017-2021 Honda Civic Type R FK8

The FK8 Civic Type R's got one problem. It doesn't sound like it should. The K20C1 makes 306 hp from the factory and it screams to 7000 RPM but the stock exhaust muffles all of it. You're on the throttle hard and the engine sounds muted. Subdued. Like Honda wrapped the whole exhaust system in insulation and told it to be quiet. That's fine for a Civic Si. It's not fine for a Type R. We built the Hybrid Racing Formula exhaust system to fix that. This is a complete cat-back exhaust with an electronic valve, custom-designed resonator and muffler, adjustable hangers, and a dry carbon fiber rear valence that replaces the stock triple-tip setup. You're getting a exhaust that sounds aggressive when you want it to and civilized when you don't. The valve's electronic so you're controlling it from the cabin. Open valve sounds like a race car. Closed valve sounds like a stock Type R with a little more edge. This is what you install when you're done with Honda's muted exhaust note and you're ready to hear what a turbocharged VTEC engine actually sounds like.


Built from Scratch for Quality, Functionality, and Affordability

Building the best exhaust for the FK8 meant starting from scratch. We sat down with a blank sheet and wrote out everything we wanted this system to be. Quality first. The exhaust had to be built from materials that won't crack, rust, or fail. Functionality next. It had to bolt on correctly, make power, and sound good. We wanted something unique. Something that stood out in a market that's already flooded with FK8 exhausts. And we wanted it to be affordable. Not cheap. Affordable. There's a difference. You're getting a complete cat-back system with an electronic valve, custom muffler, custom resonator, and a dry carbon rear valence for less than what some companies charge for just a muffler. Every piece of this system was chosen specifically for the Type R. The flanges are custom-designed. The hardware's aerospace-grade stainless so it doesn't strip or rust. The resonator and muffler are our own designs. They're not off-the-shelf units we grabbed from a supplier. We built them specifically to deliver the sound we wanted for this car.




Electronic Valve Control - Loud When You Want It, Quiet When You Don't

The midpipe's got the electronic valve and dual adapters so it bolts to any front pipe. Stock front pipe. Catted aftermarket downpipe. Catless downpipe. Doesn't matter. The adapters let you run whatever you want up front and the exhaust still bolts on correctly. The valve's what controls the sound. Valve closed and you're running through the resonator and muffler. The exhaust is quiet. Livable. You can drive to work without your neighbors hating you. Valve open and you're bypassing most of the muffling. The exhaust is loud. Aggressive. Race car loud. You're hearing turbo spool. You're hearing VTEC crossover. You're hearing the K20C1 scream all the way to redline. The valve's controlled electronically so you're opening and closing it from inside the cabin. Some people leave it closed all the time and only open it when they're driving hard. Some people leave it open all the time because they want to hear the car. Some people run it closed in neighborhoods and open on the highway. Whatever works for you.




Dry Carbon Fiber Rear Valence and Multiple Exhaust Tip Options

The rear muffler's got adjustable hangers so you're dialing in the fitment exactly where you want it. The tips aren't sitting crooked. They're not hanging too low or too high. You're adjusting the hangers until everything's flush and aligned correctly. The dry carbon fiber rear valence replaces the stock plastic rear bumper section with the factory triple-tip cutouts. Honda's triple-tip design looks like they couldn't decide between dual tips or a single center tip so they did both. It's busy. The Hybrid Racing carbon valence cleans that up. You're getting a smooth carbon panel with cutouts for dual tips. It looks way cleaner. The valence is real dry carbon fiber. Not fake plastic carbon-look wrap. Real carbon with a clear coat. We're offering multiple exhaust tip options so you can pick the look you want. Flush tips that sit nearly inside the bumper for a blown-diffuser race look. Traditional rolled tips if you want something more aggressive. Black tips. Bronze tips. Gunmetal tips. Pick whatever matches your build.




What You Get

  • Hybrid Racing Formula complete cat-back exhaust for FK8 Civic Type R
  • Electronic valve midpipe (valve open = loud, valve closed = quiet)
  • Custom-designed resonator and muffler (built specifically for FK8, not off-the-shelf)
  • Dual front pipe adapters (bolts to stock or aftermarket downpipes)
  • Adjustable rear muffler hangers (dial in perfect alignment)
  • Dry carbon fiber rear valence (replaces stock triple-tip bumper section)
  • Choice of exhaust tips (flush, rolled, black, bronze, gunmetal)
  • Custom flanges and aerospace-grade stainless hardware (no leaks, no rust)
  • Made by Hybrid Racing

Fits This Car

2017-2021 Honda Civic Type R FK8

Note: Complete cat-back exhaust system (replaces everything from front pipe back to tips). Electronic valve control (open for loud/aggressive sound, closed for quiet/stock-like sound with slight edge). Custom resonator and muffler designed specifically for FK8 (not universal off-shelf parts). Dual front pipe adapters fit stock front pipe or aftermarket catted/catless downpipes. Adjustable hangers on rear muffler for perfect tip alignment. Dry carbon fiber rear valence replaces stock plastic triple-tip bumper section (real dry carbon, not wrap). Multiple tip options available (flush tips for race look, rolled tips for aggressive look, colors in black/bronze/gunmetal). Custom flanges and aerospace-grade stainless hardware prevent leaks and corrosion. Made by Hybrid Racing.

FITMENT
2017-2021 Honda Civic Type-R FK8 only
INSTALL GUIDE
TECHNICAL DATA
Features
  • 304 Stainless steel construction (as-machined finish)
  • Bespoke rear muffler with single-side straight pipe section w/ valve control
  • Adjustable rear hangers
  • Interchangeable tips
  • Blown diffuser style tips (Black PVD) OR Single wall, straight 76mm (3" diameter) tips (Black PVD)
  • Fits stock and larger aftermarket front pipes without modifications.
  • Bespoke 2-bolt stamped flanged connections with ring gaskets
  • Gold zinc-plated hardware
  • Electronic exhaust valve system with RF key fob & plug-and-play wiring harness. No permanent modifications are necessary.
  • Full 3" construction - 2.5" dual rear section (larger than stock)
  • Matte clear coated dry-carbon valence (3K 2x2 "Twill" weave)
Optional Cerakoted bronze or gun-gray exhaust tips are available for purchase separately.
Sound Level
Factory Stock System baseline:
  • Idle: 65 dB
  • Max: 102 dB
HR Formula Exhaust System / Stock Downpipe / Stock Front Pipe
Valve Closed
  • Idle: 72 dB
  • Max: 113 dB
Valve Open
  • Idle: 75 dB
  • Max: 119 dB
HR Formula Exhaust System / Race Downpipe / Race Front Pipe / Upgraded Turbo
Valve Closed
  • Idle: 80 dB
  • Max: 123 dB
Valve Open
  • Idle: 90 dB
  • Max: 129 dB

Install guide

17-21 Civic Type-R Formula Exhaust System

Difficulty
Moderate
Steps
45
Time required
2 hr
Category
Exhaust

Parts

01 Remove engine under panel

  1. Begin your installation by unbolting the rear portion of the underbody tray. You do not need to remove the entire plastic tray, but you must remove enough bolts so the panel can be pulled out of the way.
  2. Using a panel removal tool, remove the clips that hold the inner wheel well panel in place. There is one clip in each wheel well.
  3. Once you have removed all the bolts and clips, you should be able to pull the undertray downward to gain access to the exhaust system front pipe.

02 Unbolt Exhaust

  1. Remove the exhaust from the front pipe.

03 Expose Rear Hangers

  1. At the rear of the car, push the felt rear liners inward to expose the rear exhaust hangers.
  2. No need to remove the clips totally, just push the liners inward. They will pop back in place after the HR exhaust is installed.

04 Support Exhaust

  1. Use a jack, pole, wooden blocks, or a friend to support the exhaust system.
  2. cautionThe next steps will require you to remove the exhaust hangers so be sure you are prepared to hold the system up once they are removed.
  3. noteA second set of hands definitely helps.

05 Remove Rear Hangers

  1. There are four exhaust hangers on the rear section.
  2. Remvove the exhaust from the rubber hangers. You can use a little spray lubricant and/or a removal tool to make the job easier.
  3. Be sure the weight is supported correctly.

06 Remove Exhaust System

  1. Disconnect the middle exhaust hanger.
  2. Pull downward to disconnect the exhaust and remove it from the car.

07 Remove Bumper Trim

  1. Before you can install the Hybrid Racing bumper trim, you must remove the factory insert.
  2. Remove the two outer retaining clips using a trim tool.
  3. The top section of the trim is held in with molded clips. You can use a flat tipped screw driver to depress the tips and remove the trim from the bumper.
  4. Once this part is removed, you are ready to begin the installation of the HR exhaust.

08 Mid Section Install

  1. Begin by installing the mid-section of the HR exhaust. You can take this section and hang it from the center hanger.

09 Rear Hanger Brackets

  1. Locate and install the rear muffler brackets with the supplied hardware. Thread both sides together and be sure to keep them loose so the system can be adjusted once on the car.

10 Rear Hanger Install

  1. Using the OEM hangers, install the rear HR exhaust section.

11 Rear Hanger Install

  1. noteWe suggest just installing one hanger through the bushings at a time. Once you have one hanger in each bushing, you can rotate the rubber and get the other one through.

12 B-Pipe to C-Pipe Connection

  1. Install the supplied ring gasket onto the rear section of the B-pipe (mid-pipe) already installed on the car.
  2. Make sure the gasket sits flush against the flange.

13 B-Pipe to C-Pipe Connection

  1. Use the supplied hardware and attach the pipes together. Finger tighten the bolts right now.

14 C-Pipe to Muffler Connection

  1. Like the previous step, install the ring gasket between the flanges and use the supplied hardware to bolt the exhaust pipes together.
  2. Do not fully tighten the system.

15 Front Pipe Adapter

  1. The Hybrid Racing exhaust includes both the OEM downpipe and aftermarket front pipe connections.
  2. The larger 3 inch connection should be used with any aftermarket front pipe. This will not fit with the OEM front pipe.
  3. The OEM style connection has a smaller, stamped flange and uses an OEM style gasket. This will not fit the aftermarket front pipe.
  4. Choose the correct pipe for your application and install the gaskets.

16 Front Pipe Adapter Gasket

  1. On the other end of the connection pipe, install the correct ring gasket.

17 Install Front Pipe Adapter

  1. With both gaskets installed on the front pipe adapter, install it on the car. Be sure to keep the bolts loose for the time being.

18 Install Front Pipe Adapter

  1. Use the supplied hardware and install the front pipe adapter.

19 Electronic Valve Prep

  1. Prepare to install the valve controller by loosening the rear upper muffler heat shield.
  2. You should only need to remove the LH side bolts. Once they are loose, you should be able to pull it downward.

20 Connect Exhaust Valve

  1. Supplied with this system are two wiring harnesses, an electronic control box and two RF controllers.
  2. The harness with the black connector should be used to plug into the exhaust valve.
  3. Run the wiring above the heat shield, make sure nothing touches the exhaust pipes.

21 Tighten Front Section

  1. Tighten the exhaust system, starting at the forward most part.

22 Install Carbon Panel

  1. Install the HR carbon rear panel into the bumper using the factory clips. This panel should sit flush at the top and around the bumper seam.

23 Align Exhaust Tips

  1. The exhaust tips are designed to slide in/out and the rear muffler can be shifted left/right.
  2. Install your exhaust tips and position them to your liking.
  3. cautionIf you are using the blown tips (slant cut) the tip should not rest behind the carbon panel. The tip should stick out slightly to avoid the hot gasses from melting the panel.
  4. cautionANY HOT-GAS FROM THE EXHAUST WILL MELT THE CARBON PANEL. BE SURE THE TIP DOES NOT TOUCH THE PANEL. MAKE SURE THE EXHAUST GAS DOES NOT BLOW ONTO THE PANEL. IT WILL MELT.

24 Tighten Rear Section

  1. Once everything is aligned, tighten the rear muffler hangers and the remaining pipe connections.

25 Tighten Exhaust Tips

  1. Once the hangers and pipes are tight, tighten the exhaust tips in alignment of the panel.

26 Electronics Installation

  1. Begin installing the electronic valve controller by lifting and removing the factory FK8 rear foam tray.

27 Rear Panel Removal

  1. Pull upward on the rear plastic panel to remove it. Once removed, set aside.

28 Exhaust Valve Harness

  1. On the rear bulkhead, locate the rubber grommet in the center. Use your fingers or a flat-tipped pry tool and pull the grommet free.
  2. With the grommet free, you will need to fish the other end of the valve harness through the hole. This can be a little tricky but if you have a friend feed the wire, you can pull it through.
  3. notePull all but a little slack through the floor and prepare to mount the controller box.

29 Secure Grommet

  1. Use a pair of scissors or knife and cut a slit into the factory grommet. Feed the wire through the slit and re-install the grommet in place.

30 Valve Controller

  1. Connect both wiring harnesses to the controller box.
  2. On the back, remove the tape backing and install the controller under the trunk latch.
  3. Be sure this position does not prevent the panel from going back in place.
  4. reminderIt is normal for the panel to bulge slightly after being installed. This is fine. It keeps the box from moving or rattling.

31 Secure Wiring

  1. Secure the wiring harness that will travel to the front of the cabin. Use the supplied zip ties to tidy up the wiring.
  2. Feed the power harness through the rear trim panel on the driver side.
  3. noteFor RHD cars, this should route in the opposite direction.

32 Power Harness Install

  1. Fold the rear seat down to give you access to the panels.
  2. You are free to route the wiring however you like. However the next few steps are how we suggest doing it.
  3. Feed the wire though the rear panel and then under the corner of the rear seat.

33 Power Harness Install

  1. Route the power harness around the corner of the rear seat and down through the rear panel. Conceal the wire as best as you can.

34 Power Harness Install

  1. Route the harness through the bottom section of the seat.
  2. From the seat, run the wiring under the side sill. You can lift the panel upward to make it easier.

35 Power Harness Install

  1. Route the harness under the panels along the sill. You can tuck the wiring under the panels, under the seat belt mount.

36 Power Harness Install

  1. Gently pull upward on the sill cover.
  2. Lay the power harness along the top of the carpet and make sure it reaches all the way to the fuse box.

37 Remove Kick Panel

  1. Pull gently outward on the kick panel to make it easier to access the under dash fuse box.
  2. Route the wiring harness behind the kick panel and upwards toward the fuse box.

38 Connect Power Harness

  1. Pull outward on the bottom section of the lower dash panel. It should pop outward allowing you clear access to the fuse box and grounding location.

39 Connect Power Harness

  1. Locate fuse location 35, 10amp SRS system. We will use this location to power the EVC box. It will have 12v when the key is on, but 0v when the key is off.
  2. reminderThis does not affect the SRS system because the fuse is still present.
  3. Use the OEM fuse puller and remove fuse 35 from the underdash fuse box.
  4. Insert the fuse tap into the fusebox. Secure the remaining wiring and reinstall the kick panel.

40 Ground Harness

  1. Behind the lower dash panel, there is a 10mm bolt that you can use to ground the EVC harness.
  2. Remove the bolt, insert the bolt through the eyelet and reinstall the bolt.
  3. You can now reinstall all panels and prepare to test the system.

41 Test Valve System

  1. On the key FOB, there are three buttons.
  2. Press OFF to fully close valve.
  3. Press ON to fully open valve.
  4. Press AUTO to step the valve open. You must press OFF first to close it. Pressing this button will allow the valve the step open slightly. You can continue to press AUTO to increase the step. Once you have pressed it enough times, the valve will be fully open. Press OFF to reset the system.
  5. cautionBe sure to test the valve operation before starting the vehicle. The EVC box will beep when the buttons are pressed. You should also hear the valve open and close.
  6. cautionIF YOU DO NOT HEAR A BEEP AND THE VALVE MOTOR DOES NOT REACT TO THE FOB, PLEASE VIEW STEP 44.

42 Check For Leaks

  1. Start the vehicle and check for exhaust leaks. Once you have tightened the system and confirmed it is not leaking you are now able to actuate the valve and hear the audible change.
  2. You can now complete the installation by replacing all panels and pieces that were removed for the installation.
  3. For support, please call 225-932-9588 or email support@hybrid-racing.com

43 EVC Box Wiring Diagram

  1. noteOur EVC module can be expanded to control two valves simultaneously. Connectors A and C are the outputs for the valve motor. Either A or C can power your exhaust valve motor.
  2. The valve motor must have a ground and power signal, which are supplied by the EVC box.
  3. Connector B in the center of the EVC box is connected to the chassis wiring. The chassis wiring will supply the EVC box with power and ground to control the valve motor.
  4. B2 - should connect to a chassis ground, per the eyelet on our harness.
  5. B3 - should connect to the underdash fuse box. This must be a key on 12v source. There is an inline fuse for protection.

44 Pairing Key FOBs

  1. cautionEach key fob should already come pre-paired with your electronics box. In the event it is not, or you are using a replacement key fob, please follow these steps to pair.
  2. On the side of the box, there is a small button on he inside. Find a small pick and press it. You should hear a beep and a green LED will light up behind the connectors.
  3. Take your FOB and press ON. If it is paired successfully, you will hear a beep and the light will go off.
  4. You can now control the valve with the newly paired key FOB.
  5. reminderPlease contact us with any questions if you have issues doing this.

45 Exhaust Gasket Replacement Part Numbers

Finishing up


Revision 3 · Updated Oct 27, 2026

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